“Programming today is a race between software engineers striving to build bigger and better idiot-proof programs, and the Universe trying to produce bigger and better idiots. So far, the Universe is winning.” - Rich Cook
Hey, Eclipse is an IDE (integrated development environment) for Java programming. One usually edits java source code in eclipse. You have choice to run debug/execute program, and the choice to run junit to test your program. But you need to configure Eclipse to do so (I think it is called preference in the drop-down menu). Also, it is not necessary to debug/execute/junit test in eclipse. You can simply do it from command-line console such as cmd.exe in win.